Everbuild Tecnic Fire Sealant 400 is a neutral cure, elastic, acoustic rated silicone sealant which conforms to EN1366-4:2010 for fire retardancy and has a fire rating of up to 4 hours in certain joint configurations. It is typically used for all building and glazing joints which require a fire rating, sealing joints, voids and irregular holes in fire walls, partitions and other structures. Also suitable for maintaining the integrity of pipes and cables that penetrate them and fire rated expansion joints. Acoustic rated to BS EN ISO 140/3. Tested for air permeability to EN13141-1 Ventilation for buildings. Performance testing of components/products for residential ventilation.ISO11600 class: F25LM when tested to ISO 9047, 8339 and 10563. Also conforms to SNJF norms.CE Marked under ETAG 026 Part 3-ETA 13/1059.